# File lib/rvg/rvg.rb, line 162 def background_position=(pos) warn "background_position= has no effect in nested RVG objects" if @nested bg_pos = pos.to_s.downcase if ! ['scaled', 'tiled', 'fit'].include?(bg_pos) raise ArgumentError, "background position must be `scaled', `tiled', or `fit' (#{pos} given)" end @background_position = bg_pos.to_sym end